<div dir="ltr">VectorGraphics is going to be slow(ish) on any ARM SBC or phone unless/until it is OpenCL/Vulkan accelerated and maybe even then. It's a very computationally intensive subsystem (at least an order of magnitude more so than raster graphics) and most ARM mobile chips (i.e. pretty much everything non-Apple) are generally 1/10-1/20th the speed of a fast x86 computer as they are typically inferior in every respect: manufactured on larger process nodes, lower clock speeds, lower bus bandwidth, weaker floating point units, smaller and slower cache, slower RAM etc etc.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Nov 21, 2021 at 4:46 PM Eric Gade via Cuis-dev <<a href="mailto:cuis-dev@lists.cuis.st">cuis-dev@lists.cuis.st</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi all,</div><div><br></div><div>Today I tried building the latest CogVM with the VectorGraphics plugin for arm64. If I load up the latest Cuis image and run it, then import the TT fonts, the whole system becomes incredibly slow for key tasks. In particular, text editing (typing in a Workspace) or moving around windows become slow enough to be unusable.</div><div> <br></div><div>For reference, I am running this experiment on the MNT Reform, which boasts an i.MX8MQ with 4x ARM Cortex-A53 cores (1.5 GHz) -- not exactly the fastest.</div><div><br></div><div>Is there some kind of benchmarking I can run to get solid numbers for all this? And more importantly, should I not expect to have good performance on the given processor?</div><div><br></div><div>On a related note, I did notice that the VectorGraphics enabled UI runs much more smoothly on my big desktop (an x86 beast) than it had in the past, so that's nice!</div><div><br></div><div>Thanks,<br></div><div><br>-- <br><div dir="ltr"><div dir="ltr"><div>Eric</div></div></div></div></div>
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